40945970 has 32 divisors (see below), whose sum is σ = 82116720. Its totient is φ = 14595840.

The previous prime is 40945903. The next prime is 40945973. The reversal of 40945970 is 7954904.

It can be written as a sum of positive squares in 8 ways, for example, as 8649481 + 32296489 = 2941^2 + 5683^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (40945973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1661 + ... + 9200.

Almost surely, 2^40945970 is an apocalyptic number.

40945970 is an abundant number, since it is smaller than the sum of its proper divisors (41170750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40945970 is a wasteful number, since it uses less digits than its factorization.

40945970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10910.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 40945970 is about 6398.9038123729. The cubic root of 40945970 is about 344.6701882039.

The spelling of 40945970 in words is "forty million, nine hundred forty-five thousand, nine hundred seventy".